X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fsal%2Fapi%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fsal%2Fmatch%2FMatch.java;h=910695c1e9cbc0ebcfb121b621fb7187305aff37;hb=2c4b7c792b049ece3177b8b6fc6b6331038c5f5b;hp=b6381cc7d8fbe089cc96dbea518e82be27c06817;hpb=f5ae77b71afeee5667bf2a8ad9d0753025ee1947;p=controller.git

diff --git a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/match/Match.java b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/match/Match.java
index b6381cc7d8..910695c1e9 100644
--- a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/match/Match.java
+++ b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/match/Match.java
@@ -20,6 +20,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.TreeMap;
 
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
@@ -441,7 +442,20 @@ public class Match implements Cloneable, Serializable {
     public int hashCode() {
         final int prime = 31;
         int result = 1;
-        result = prime * result + ((fields == null) ? 0 : fields.hashCode());
+        if (this.fields == null) {
+            result = prime * result;
+        } else {
+            // use a tree map as the order of hashMap is not guaranteed.
+            // 2 Match objects with fields in different order are still equal.
+            // Hence the hashCode should be the same too.
+            TreeMap<MatchType, MatchField> tm = new TreeMap<MatchType, MatchField>(this.fields);
+            for (MatchType field : tm.keySet()) {
+                MatchField f = tm.get(field);
+                int fieldHashCode = (field==null ? 0 : field.calculateConsistentHashCode()) ^
+                             (f==null ? 0 : f.hashCode());
+                result = prime * result + fieldHashCode;
+            }
+        }
         result = prime * result + matches;
         return result;
     }
@@ -473,6 +487,13 @@ public class Match implements Cloneable, Serializable {
 
     @Override
     public String toString() {
-        return "Match[" + fields.values() + "]";
+        StringBuilder builder = new StringBuilder();
+        builder.append("Match [fields=");
+        builder.append(fields);
+        builder.append(", matches=");
+        builder.append(matches);
+        builder.append("]");
+        return builder.toString();
     }
+
 }